diff --git a/system/t12_api/mirrors.py b/system/t12_api/mirrors.py
index e95a5b40a..ce0926730 100644
--- a/system/t12_api/mirrors.py
+++ b/system/t12_api/mirrors.py
@@ -62,7 +62,6 @@ def check(self):
         if resp.json()["State"] != TASK_SUCCEEDED:
             _id = resp.json()['ID']
             resp = self.get("/api/tasks/" + str(_id) + "/detail")
-            sleep(3000)
             raise Exception("task failed: " + str(resp.json()))
         _id = resp.json()['ID']
         resp = self.get("/api/tasks/" + str(_id) + "/detail")